Here is an excellent website (that you may as well get familiar with) to help you with anything grammar related. https://owl.english.purdue.edu/owl/resource/730/01/
In class we took a parts-of-speech pre-test. Students wrote down what particular part-of-speech they are struggling with. Here are some available resources to help. Most of these have the answers at the bottom of the page- please only use the answers to CHECK your paper.
Prepositions- Prepositions-Circling-P-1-Advanced Prepositions-Circling-P-2-Beginner
Adverbs- Adverbs 1
Conjunctions- Conjunctions Worksheet
Adjectives- Adjectives
Interjections- Interjections
Verbs- Action Verbs Helping Verbs Linking Verbs
Nouns- Nouns
Pronouns- Pronouns